4
Q:

A Sarcomere is the distance between two

A) Z discs B) H zones
C) A bands D) I bands

Answer:   A) Z discs



Explanation:

A sarcomere is the basic unit of striated muscle tissue. It is the repeating unit between two Z lines.

Skeletal muscles are composed of tubular muscle cells (myocytes called muscle fibers or myofibers) which are formed in a process known as myogenesis. Muscle fibers contain numerous tubular myofibrils. Myofibrils are composed of repeating sections of sarcomeres, which appear under the microscope as alternating dark and light bands. Sarcomeres are composed of long, fibrous proteins as filaments that slide past each other when a muscle contracts or relaxes.

 

A muscle fiber from a biceps muscle may contain 100,000 sarcomeres.

Subject: Biology
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Q:

Yeast and mushrooms are the examples of organisms of which kingdom?

 

A) Fungi B) Monera
C) Plantae D) Protista
 
Answer & Explanation Answer: A) Fungi

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Q:

Which of the following is the largest group of animals?

A) Nematoda B) Porifera
C) Arthropoda D) Mollusca
 
Answer & Explanation Answer: C) Arthropoda

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Q:

Plants having body that is differentiated into roots, stems and leaves and have specialized tissue for the conduction of water and other substances, fall in which group?

 

A) Bryophyta B) Thallophyta
C) Pteridophyta D) All option are correct
 
Answer & Explanation Answer: C) Pteridophyta

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Q:

Which are the special proteins in muscles that contract and relax to cause movement?

 

A) Contractile protein B) Receptor protein
C) Structural protein D) Enzymatic protein
 
Answer & Explanation Answer: A) Contractile protein

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Q:

The richest source of Vitamin D from food is

A) Cotton seed oil B) Olive oil
C) Cod liver oil D) Sunflower oil
 
Answer & Explanation Answer: C) Cod liver oil

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Q:

Oncology is associated with treatment of

A) Osteoporosis B) Diabetes
C) Cancer D) Renal failure
 
Answer & Explanation Answer: C) Cancer

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Q:

The group of crop plant that are vegetatively propagated is:

 

A) potato,papaya and banana B) Sugarcane,potato and banana
C) groundnut,drumstick and cashew nut D) Onion,coriander and lime
 
Answer & Explanation Answer: B) Sugarcane,potato and banana

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Q:

The O-T-C medicine Crocin is an

A) Analgesic B) Antipyretic
C) Analgesic and antipyretic D) Antiseptic
 
Answer & Explanation Answer: C) Analgesic and antipyretic

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